使用XPATH或CSS选择器在Selenium中查找元素

问题描述：

我正在尝试使用C#中的Selenium Webdriver查找元素"import".尝试了以下代码，但没有找到它.

I m trying to find the element "import" using Selenium Webdriver in C#. Have tried the following codes but nothing find it.

driver.FindElement(By.XPath("//*[@class='menu_bg']/ul/li[3]")).Click();
driver.FindElement(By.XPath("//*[@id='import']/a")).Click();
driver.FindElement(By.CssSelector("#import>a")).Click();
driver.FindElement(By.XPath("//*[@class='menu_bg']/ul/li[3]/a")).Click();
driver.FindElement(By.CssSelector("ul[@class='menu_bg']>li[value='3']")).Click();

请帮帮我.设计页面如下所示:

Please help me out. Design page looks like below:

<body>
    <div class="header_bg"></div>
    <div class="menu_bg">
        <ul class="menu">
            <li id="retrieve"></li>
            <li id="scan" class="test"></li>
            <li id="import">
                <a target="main" href="import/import.aspx" onclick="clickme(this,'import')">Import</a>
            </li>
            <li id="admin"></li>
            <li id="help"></li>
            <li style="float: right;"></li>
        </ul>
    </div> 
</body>

一直出现以下错误:

unable to find the element

答

XPath索引器基于1，与大多数其他语言基于0的语言相反.

XPath indexers are 1-based, as opposed to most other languages whereby they are 0-based.

这意味着您实际上是在定位第二个 li元素，而该元素没有anchor元素.

This means you are actually targetting the 2nd li element, which has no anchor element.

所以:

//*[@class='menu_bg']/ul/li[3]/a

但是，这个XPath查询不是很好，而且位置太严格-因此，尽管这个在之上新固定的XPath应该可以起作用，但我还是建议您考虑一下其他事情.

However, this XPath query is not great and is too strict on position - thus although this newly fixed XPath above should work, I'd advise you to think of something else.

使用XPATH或CSS选择器在Selenium中查找元素

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